Help with under eye conclear for dark circles?

temptalia.com has a wonderful little tool to figure out your shade in any foundation. go there and look for a link to her "foundation matrix". you enter what shade you are and you get a list of every possible foundation and concealer you could ever think of. however, the regular mac cool/warm undertone idea is reversed on her blog. you seem to have a cool undertone, but i'd enter it as warm on there.